Centrifugal separator.



J. J. BBRRIGAN.

CENTRIPUGAL SEPABATOB.

APPLICATION FILED HOV. 7, 1906.

Patented July 26, 1910.

HHHHHIL Patented July 26, 1910.

a BKEETSSHEET 2.

I 7 M 0 emu TLED M 2 LY". mu m .JH .wm n A WITNESSES:

ATTORNEY Patented July 26; 1910.

5 SHEETS-SHEET 3.

. 30 principle and in the particular combina- JOHN J. BEBBIGAN, OF ORANGE, NEW JERSEY.

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4 Specification of Letters Patent. Patented July 26, 191() Application filed November 7, 1905. Serial No. 286,193.

To all whom it may concern:

Be it known that I, Jonx J. BsRRIoAx, of Orange, Essex county, New Jersey, have invented a new and useful Improvement in Centrifugal Separators, of which the following is a specification.

The invention relates to centrifugal separators for solids and liquids.

The principle of the invention consists in subjecting the combined solids and liquids to separation in order to remove the greater part of the liquid. then conveying-the residual solid with such liquid as may remain therein through a series of frusto-conical chambers disposed in a rotary cylinder and axially concentric therewith, in each of which chamhers the materials are first projected outwardly;centrifugally toward or to the wall of said cylinder, and then moved cent-ripetally t o the central outlet leading .to the next chamber. The liquid may escape from each chamber by -an independent outlet therein, and the solid material is dried by being carried by the conveying scrapers around the inner surface of the chamber and toward its axis. as well as onward to the delivery outlct of the last chamber.

The invention consists in the construction hereinafter set forth which embodies said tions recited in the claims.

In the accompanying drawingsFigure 1 is a vertical longitudinal section of the ma-- chine. Fig. 2 is a cross section on the line m-nof Fig. 1. Fig. 3 is an elevation of the delivery end of the machine.

Similar numbers and letters of reference indicate like parts. 1 is a'horizontal cylinder within which the 0 working parts of the machine are inclosed. hi the head 2 of said cylinder is' a hollow trunnion received in a bearing in the fixed standard 3. Bolted to the opposite head 4 of said cylinder is a cylindrical casing 5, on. which is formed a hollow trunnion which is received in a bearing in the fixed standard 6." Standards 3 and 6 rest upon the bed v7 of the machine. The driving pulley 8 is fast upon the cylinder trunnion. Power is 53 counmmicatcd to said pulleyby any suitable belt (not shown) and in that way cylinder 1 is caused to rotate.

It is the feed hopper supported on bracket 10. extending from standard 3. The combined solid and li uid materials 'der 1 by means of a screw conveyor 11, the shaft'of which is supported at one end in a earing on the bracket 10 and carries the sprocket wheel 12. conveyer shaft is stepped in a wall of a chamber 13 formed upon the inside of the head 2 which chamber by means .of the inclined duct 14 communicates with the interior of cylinder 1.

Passing through the hollow trunnion and entering the casing 5 is a shaft 15 which is held in stationary position by a lover arm 17*, fast on the outer end of said shaft, which lever arm is connected by a rod 16 with the bed of the machine. Any other convenient means may be used for holding said shaft stationary. lVithin the casing 53, the shaft 15 carries the toothed gear 17, and,

engaging with said gear 17, is a pinion 18, the shaft of which is journaled in the head 4 of the eylinder and in the head 19 of casing 5. Shid pinion also engages with a gear 20 fast on the central shaft 25, the number of teeth of gear 20 being somewhat different 8 from that of gear 17. Owing to customary backlash between gears it is quite practicable to run two gears such as 17 and 20 of substantially the same diameter,'but one hav: ing one or two teeth more than the, other, 5 in mesh with the same pinion or gear (such as .18); and thereby the drivengear- (20) I is caused to rotate at a-speed diil'erent from that of the cylinder 1. Shaft 25 extends through roller hearings in a sleeve 22 formed 9Q on the inner side of head 4, and is stepped in roller bearings in a sleeve 23 formed on the inner side of the wall of chamber 13. Said sleeves are provided with annular covers.

Within the cylinder Lure a. number of supporting rings 26, and secured to each of said rings is a frusto-conical transversely extending partition 27, 28, 29 and 30. These partitions divide the interior of the cylinder in, successive separating chambers or comp-runents A, B, C and D. The smaller openings of said partitions are larger than the shaft 25. so that around said shaft there is an annular space, through which the ematerialbeing treated may pass from one.

compartment to the next. The partitions are preferably set somewhat apart so that. the smaller end of each may be opposite the inner wall of the cylinder, whereby material delivered throu h such smaller openings .to be separated are conveyed into the cylinmay reach the inner wall of the cylinder The other end of said 60 fixed chamber 37.

prior to convcvance into the next conical partition in series. Communicating with the last part tion D, is a delivery pipe 3i, which extends through the shell of cylinder 1 and opens into a fixed annual delivery chamber 32, in which said cylinder freely turns. On the shaft :25 are arms 33, which carry bars 34, upon which bars are se- (ut'wl conveying scrapers 35. Some of these scrapers act upon the material which is centrifugally deposited on the inner side of the c \'linder wall, and others act upon said material deposited on the inner peripheries of the frusto-conical partitions. All of the scrapers are suitably inclined, so as to act as conveyers for said material to carry it from the feed end to the delivery end of the machine. c

I u the cylinder head 2 is an opening 36 for the escape of liquid into the annular Inserted in the wall of c linder l and protruding into 'the separating chambers B, C, D, and also into the chamber E (between the partition 30 and the head 1) are open tubes 38. There may also be an opening 39 in the cylinder head 2, near to the center thereof. On the hub.

of driving pulley 8 is a sprocket wheel 3;), which, by means of the chain belt 40, transmits motion to the sprocket wheel 41 on the end of shaft 42 which extends through the bed T of the machine and carries, at its farther extremity, a sprocket wheel 43, which, by chain belt 4-1, rotates sprocket wheel 12. 'hen the drying pulley 8 is rotated the cylinder 1 is caused to turn on its trunnions, thus carrying the pinion 18 in planet movement around the fixed gear 17. Rotary motion is then communicated to pinion 18, whi h, in turn, imparts it to gear 20, and in this way the shaft 25 is set in rotation to cause the scrapers to be carried aroimd the inner surfaces of the cylirtler and conical partitions. The feed conwcr 11 is set in rotation by the sprocket chain 40, actuated by the shaft 42, which, in turn, is driven b the belt 40 from the spxl-pcket wheel 39 on the hub of driving pu ey 8.

The operation of the machine is as follows: The combined solid and liquid materials to be separated are introduced into the hopper S) from the pipe 45, and, thence, by means of the screw conveyer 11, are carried into the chamber 13, whence by the pipe 14 they are delivered into the first separating chamber A. A ring of combined solid and liquid material is formed around that portion of the inner periphery of the cylinder 1, which lies between the first, partition 27 and the cylinder head 2. The solids being heavier lie in contact with the cylinder periphery, and the liquid forms aring inside of said solids. The radial width of this ringcannot, of course, extend beyond the edge of the liquid escape opening 36, so that as the materials are introduced the liquid thus becomes centiifugally separated from the so ids and escapes from the opening 36 in cylinder head 2, and so to chamber 37, and then by outlet 21, (Fig. 3,) from the machine. The solids. with such residual liquid as they may still retain, are carried by the scrapers in chambcr'A around the inner periphery of the first partition 27 and toward its axis, and are delivered through the central open ing in said partition to the second chamber B. Here the centrifugal force again throws the solids' out to the cylinder periphery, along and around which they are carried by the scrapers, and so through the partition 28 in chamber C. The same operation is repeated in chamber C, and again in chamber D, and finally the scrapers in chamber D convey the solid material to the outlet pipe 1, through which it is projected by centrifugal force into the fixed chamber 32, from which itis delivered through any suitably disposed opening. Any liquid which may remain in the solid in chamber A, after it is carried by the scrapers to the inner surfaces of partition 27, flows back, and, in fact, is carried back by the centrifugal force to the outlet 36 which is farther away from the axis than such inner surfaces. The solids which are delivered into chamber B contain very little moisture, and, as the interior of chamber B is practically dry, the solids thus become dried through being carried by the conveying scrapers around and along the wall of said chamber and so exposed to the action of the atmosphere. This. drying being repeated in chambers C and D, so that when the solids finally emerge at pipe 31, the quantity of moisture left in them is inconsiderable.

As this machine may be advantageously used upon solids and liquids in a heated condition, it is desirable to prevent too high a temperature in the interior of the separating cylinder. To this enu, I provide the short tubes 38, which convey atmospheric air into said cylinder, which circulates through the conical partitions to the comparatively large opening 39 in the head 2.

Through the wall of cylinder 1 and in each chamber B, C and D, are made pairs of small openings 46, 47 and 48, which respectively communicate with the annular fixed chambers 49. 50 and 51 each at a point somewhat, behind the smaller end of the cone-- sponding frusto-conical partition extending into each such chamber. The purpose of these openings is to permit. the escape of any small amount of liquid which may remain in the material while in said chambers, the said liquid then flowing into the annular chambers 49, 50 and 51, fromwhich it is drawn off by any convenient outlet as 24. The openings 46, 47 and 48 are made only inst large enough to allow escape of the iquid. Very little liquid will remain in the solids forced through the smaller end of conical partition 27 and the material thrown against the outer wall of the drum will be practically solid. The material is moreover thrown somewhat in advance of the openings 46, 47 and 48 andwithin the sweep of the scrapers sothat it has no particular tendency to go backward toward the hole. Such wetting liquid as it may still retain on the other hand does flow, backward through such solid material, and articularly when the solids begilf to move oward the axis in traveling through the coned chamber, and so ultimately reaches the opening. The same action of c urse occurs in each successive chamber. Any number of frusto-conical partitions may be employed depending on the number of separating chambers A, B, C, etc. desired. The various chambers A, B, C and D and the rotary conveyers therein constitute in effect, it will be seen, separate rotary separators arranged in series; and the apparatus as a whole may be described as a multiple effect separator.

I claim: 1. A machine for separating solids from liquids, comprising in combination a pluity of rotary chambers arranged in series apd each having an inclined surface leading-to an outlet opening, such qpenings of 'hhambers other thanthe last lea ing to the chamber beyond, means forthe escapeof liquid at the point of greatest diameter in each such chamber and means for swee ing solid material along such inclined su aces to such openings.

2. A machine for separating solids from liquids, comprising in combination a plura ity of rotary chambers arranged in series and each having a cylindrical portion and beyond it an inclined surface leading to an outlet opening such openings of chambers other than the last leading each to the cham- 4 ber beyond and located opposite the cylinthe escape of liquid.

drical portion of said chamber, so that the dischar e from such opening passes to the cylindrical ortion of the chamber beyond,

and means or sweeping solid material alon such inclined surfaces to such 0 mngs, eac chamber further rovided wit means for as 7 'B yond,'and means for sweeping solid material along such surfaces to such openin s.

4. A machine for separating solids from liquids, comprising in combination a rotary chamber having within it a plurality of coned partitions having discharge openings at their smaller ends, said conm partitions spaced apart, with cylindrical portions of the chamber between them, the opening of one such cone leading ,to the chamber between that cone and the next, and being opsite a cylindrical portion of such chamber yond, and means for sweeping solid material up such coned partitions.

5. A machine for separating solids from liquids, comprising in combination a rotary chamber having within it a plurality of coned partitions spaced apart, the said chamber having cylindrical portions between said partitions, said partitions having discharge openin at their smaller ends located 0 pos1te cy1indrical portions of the sides 0 the chamber, the opening of one such cone leading to the chamber between that cone and the next, and means for sweeping solid material up such coned partitions, said chamber provided with means for the escape of liquid rom the spaces between the partitions.-

6. A machine for separating solids .from liquids, comprising in combination a rotary drum having within it a series of coned partitions spaced apart, the said chamber having cylindrical rtions between said partitions, said partitions having discharge openings at their smaller ends located opposite cylindrical portions of the sides of the drum, a

rotary shaft arranged longitudinally, and means thereon for swee ing solid material up said partitions towar said openings.

7. A machine for separating solids from liquids, comprising in combination a rotary drum having within it a series of coned partitions spaced apart, the said chamber hav ing cylindrical portions between said partitions, said partitions having discharge openings at their smaller ends located 0 posite cylindrical portions of the sides 0 the drum, a rotary shaft arranged longitudinally,

and means thereon for sweeping solid material u said partitions toward said openings, said rum provided with means for the escape of liquid from the chambers between said artitions.

.8. a centrifugal separator, arotary casing containing a series of chambers arranged to successively receive and treat material, each of said chambers having a cylindrical surface and another surface converging toward the axis and terminating in a discharge opening which, in the casepf each chamber but the last, is oppositeacyhndrical portion of the chamber iyond, and means for carrying the materia forward along such converging surfaces, back tothe casing wall and then'again along the converging surfaces.

9. In a centrifugal separator. a rotary casing containing a series of chambers arranged 5 to succe; ivcly receive and treat material, eachot said chambers having a cylindrical surface and another surface converging toward the axis and terminating in a discharge opening which, in the case of'each 0 chamber out the last. is opposite a cylindrical portion of the chamber beyond, and means ior moving solid material along said sur-t'aces torard said axis and back to the interior wall of the casing at the end of each such surface, said casing provided with means for the escape of separated liquids.

10. A machine for separating solids from liquids comprising in combination a rotary drum having within it a plurality of spaced :0 inclined surfaces arranged in series, there being cylindrical portions of the walls of the drum between said surfaces, each such surface terminating in a discharge opening which, in the case of'each chamber but the last, is opposite one of the said cylindrical portions of the walls of the drum, a rotary shaft within said drum. means thereon for sweeping solid material up such inclined surfaces from the drum wall in succession, means for rotating the drum and means for rotating said shaft ata speed ditterent from thatof the drum.

11. A machine for separating solids from liquids. comprising in combination a rotary drum having within it a plurality of inclined surfaces arranged in series, a rotary shaft within said drum, means thereon for sweeping solid material up such inclined surfaces, means for rotating the drum, a fixed gear, another gear having a ditierent number of teeth and mounted on said shaft and a pinion carried by the drum and in mesh with both said gears.

12. A machine for separating solids from liquids, comprising in combination a rotary vessel, having a plurality of chambers arranged in series and communicating one With another. wherein solids are centrifw gally projected to the sides of such vessel, and. alternating with said chambers, a plurality of devices for conveying said solids centripeta'lly. T 1 13. A machine for separating solids from liquids. comprising in combination a rotary c \'uudrical vessel having a plurality of frusto-conical partitions arranged in series and spaced apart with cylindrical portions of the walls of said vessel between them, a and having discharge openings at their sapaller ends opposite the said cylindrical portions of the walls of said vessel intermediate said partitions. and means for courcying the material to be separated alteraiately over the vessel walls and over the concave peripheral surfaces of said partitions and through the said discharge openmgs.

14. A machine for separating solids from liquids, comprising in combination a rotary vessel having within it a series of frustoconical partitions spaced a art with cylindrical portions of the we] s of said vessel between them and having discharge openings, at their smaller ends opposite the said cylindrical portions ofthe walls of said vessel intermediate said artitions and dividing the vemel into a p urality of chambers, means for the escape of liquid ,from ,said chamber, means for feedin combined solid and liquid material into the first chamber,

means for conveying solid material along said vessel wall and along said partitions to the discharge openings therein, and means for discharging solids from the last chamber.

15. A machine, for separating solids from liquids, comprising in combination an approximately horizontal rotary cylinder, a plurality of coned partitions arranged in series and spaced apart with cylindrical portions of the walls of said cylinder between 16. In a machine for centrifii lly separating solids from liquids a rot ry cylindrical vessel comprisin a plurality of chamhers separated by fixe transversely extending partitions wherein mixed solids and liquids undergo successive separations, said vessel having means for the escape of centrifngally ejected liquid and means for feeding solid material through the chambers successively.

17. A centrifugal machine comprising a plurality of connected coned rotary chamrbers, each suclgchamber having imperforat-e curved surface extendin from near the periphery inward and provided with opemngs for the discharge of solid material from the one chamber to the next said opening in the one nearlycoinclding with the beginning of the next in order, and means within said chambers for feeding solid material forward from near the peripheries over such imperfor-ate surfaces toward such openings, said chambers being provided with means for the escape of separated liquid at their points of greatest diameter.

18. A centrifugal machine comprising in combination a plurality of rotary communieating open ended chambers, each having inwardly inclined imperforate .surfaces at one such open end leading to an openin of relatively small diameter, means for fee ing v vided with means for the discharge of sepcombination a rotary drum a mixture of solid and liquid material to one of said chambers, and means for feedin solid material from near the peripheries 0 said chambers over said inclined imperiorate surfaces toward the said openings, said enambers provided with means for the escape of separated liquid at their point of greatest diameter, and the last chamber proarated solid material.

19. A centrifugal separator comprising in having means for delivering therein a mixture of solid and liquid materials, and means for moving the solid material from near the peri hery of said drum toward the axis of the ruin, nturning it again to near the periphery, and again moving it toward the said axis, said drum provided with means for the escape of separated liquid at its peripheryfi 20. A centrifugal se arator comprising in combination a rotary -mm having within it one or more partitions extending from near the periphery toward the center, and each provide at a point distant from the periphl livering a mixture of solid and liquid materials into said drum, and means for moving solid material to such dischar opening or openings, saiddrum provide with means for air circulation comprising air conduits extending from the outside of the drum inward to a point beyond the normal level of material against the periphery.

21. A centrifugal separator comprising in combination a drum rotatable about a central axis, one or more transversely extending coned partitions within said drum each having an opening near the center, a conveyor shaft having its axis coincident with the axis of rotation and provided with conveyin means, means for rotating said shaft an means for the sup ly of mixed solid and liqaid materials and for the escape. of separated liquids and solids In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOHN J. BERRIGAN.

v :Witnesses:

.Wm. H. Snow,

ery with a discharge opening, means for de- Pm BENJAMIN, Jr. 

